2011DIN EN 1447:2011 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of long-term resistance to internal pressure; German version EN 1447:2009+A1:2010
2009DIN EN 1447:2009 Plastics piping systems - Glass-reinforced thermosetting plastics (GRP) pipes - Determination of long-term resistance to internal pressure;English version of DIN EN 1447:2009-07